Under pressure to ensure that taxpayers money is not spend on city bonuses, the PM insisted today's rescue package came "with strings attached".

"As far as remuneration is concerned, it will be a condition that they will accept new conditions on executive remuneration and particularly the bonus system that has caused so much difficulty," Brown said.

The Financial Services Authority will shortly publish a consultation document about the dangers of excessive risk taking, he told MPs.

"Let's deal once and for all with the issue of excessive risk-taking."

Brown's unequivocal messaged followed concern, expressed on all sides of the house, about the large financial rewards paid to City chiefs.

Gerald Kaufman, Labour MP for Manchester Gorton, told the MPs that bank chiefs should "not be allowed to line their pockets on the back of" taxpayers' cash.

David Cameron, the Conservative leader, said that banking system itself must not be allowed to fail, but he added: "No one wants rewards for failure."